APA (7th ed.) Citation

Keiter, R. B., & Boyce, M. S. (1991). The Greater Yellowstone ecosystem: Redefining America's wilderness heritage. Yale University Press.

Chicago Style (17th ed.) Citation

Keiter, Robert B., and Mark S. Boyce. The Greater Yellowstone Ecosystem: Redefining America's Wilderness Heritage. New Haven: Yale University Press, 1991.

MLA (8th ed.) Citation

Keiter, Robert B., and Mark S. Boyce. The Greater Yellowstone Ecosystem: Redefining America's Wilderness Heritage. Yale University Press, 1991.